wcscspn

wcscspn

Defined in header <wchar.h>
size_t wcscspn( const wchar_t* dest, const wchar_t* src );
(since C95)

Returns the length of the maximum initial segment of the wide string pointed to by dest, that consists of only the characters not found in wide string pointed to by src.

Parameters

dest - pointer to the null-terminated wide string to be analyzed
src - pointer to the null-terminated wide string that contains the characters to search for
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